-5-8(1+9x)=21

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Solution for -5-8(1+9x)=21 equation:


Simplifying
-5 + -8(1 + 9x) = 21
-5 + (1 * -8 + 9x * -8) = 21
-5 + (-8 + -72x) = 21

Combine like terms: -5 + -8 = -13
-13 + -72x = 21

Solving
-13 + -72x = 21

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '13' to each side of the equation.
-13 + 13 + -72x = 21 + 13

Combine like terms: -13 + 13 = 0
0 + -72x = 21 + 13
-72x = 21 + 13

Combine like terms: 21 + 13 = 34
-72x = 34

Divide each side by '-72'.
x = -0.4722222222

Simplifying
x = -0.4722222222

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